About your Search

20130211
20130219
Search Results 0 to 3 of about 4 (some duplicates have been removed)
. there is no risk, but it is a warning of what is out there. nasa attract the asteroid. they said there was no danger. an observer pick out the tiny white shape of the rock going through space. >> we have always focused people's minds on this. we have known for a while that there are things out there. this is just a very timely reminder, a reminder of why it is important for us to keep scanning the skies. >> all of this is a wake-up call. the asteroid that was much larger did pass us by. when it comes to protecting ourselves, there is not much we can do. bbc news. >> for more on today's events, i spoke to a chemist at the smithsonian in washington. what is going on out there? first of all, you have this need your read, and then you have this asteroid. >> absolutely, a very busy day. i think it is unprecedented. a really truly interesting day, to have them passing so close that it is actually visible, and then to have this media right in russia. it is a special day. >> what is causing it? we did not know any of this was coming? >> no, we were actually caught a bit by surprise. we h
as an asteroid that came exceedingly close to earth, at least in space terms. as this nasa animation shows, the asteroid was just over 17,000 miles away from earth, traveling at about eight miles per second, actually inside a ring of television and weather satellites that surround the planet. named da-14, the asteroid was half the size of a football field. it passed, we can happily report, without incident. here to tell us about both events is astrophysicist and author neil degrasse tyson, director of the hayden planetarium in new york city. let's start with what happened in russia. how unusual was that in terms of size and impact? >> well, we couldn't know precisely how common that would be. all we can do is sort of look back at other sort of reported such events. for example, there was an air blast that happened in the airspace over india and pakistan back in 1990s. which happened to occur while they were in intense conversations about their nuclear buildup of arm ament. and so such a blast mimics greatly what would happened with the nuclear blast. it is an instant deposit of energy in t
Search Results 0 to 3 of about 4 (some duplicates have been removed)